Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 321: | \[{8^{321}-1\over7}\] | 73 × 14662639 × 17866285599391<14> × 162259276829213363391578010288127<33> × 210516800089955301807292488792588188869650399862249<51> × 4697382335699080991160439732748977071469258244120906774840307806403019635933401543777637481<91> × 3629662994008153848429240162600396180519766791204932405950630091372441619019203827105766225151<94> |